gianm commented on a change in pull request #6206: Fix NPE in
KafkaSupervisor.checkpointTaskGroup
URL: https://github.com/apache/incubator-druid/pull/6206#discussion_r212164860
##########
File path:
extensions-core/kafka-indexing-service/src/main/java/io/druid/indexing/kafka/supervisor/KafkaSupervisor.java
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@@ -1627,11 +1664,15 @@ private void checkPendingCompletionTasks() throws
ExecutionException, Interrupte
continue;
}
- Iterator<Map.Entry<String, TaskData>> iTask =
group.tasks.entrySet().iterator();
+ Iterator<Entry<String, TaskData>> iTask =
group.tasks.entrySet().iterator();
while (iTask.hasNext()) {
- Map.Entry<String, TaskData> task = iTask.next();
+ final Entry<String, TaskData> entry = iTask.next();
+ final String taskId = entry.getKey();
+ final TaskData taskData = entry.getValue();
+
+ Preconditions.checkNotNull(taskData.status, "task[%s] has a null
status", taskId);
Review comment:
When will this get thrown and what will happen when it gets thrown? I'm
wondering what the user experience is going to be like.
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